The Design of Microplasma Generation Device for Detection of Metallic Ion in Aqueous Solution

• Main Authors: Fu-Yu Yang, 楊馥瑜
• Other Authors: Cheng-Che Hsu
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/3hcpgm

碩士 === 國立臺灣大學 === 化學工程學研究所 === 106 === In this study, we use the feature that plasma can excite atoms to excited state then emit the lights. With optical emission spectrometer, we can get the information from spectrum. In this study, we design two kinds of devices which can be operated in atmosphere. One of device is pin-to-surface, that use stainless steel pin as positive and solution as negative. The other one is a novel design, that use copper tape and filter paper with solution as electrode. In these two system, the plasma is produced by 9 V power supplier connecting a high voltage module and give around 3 kV to system. Plasma of pin-to-surface system results from impact of high speed electrons, causing high temperature gasification. Gas enter plasma zone and get excited. By comparing characteristic peak of each element, we can analysize the compositions of samples. In addition to compare these two system, we try to find suitable condition for the two systems. The lowest concentration of copper solution that can be detected is 500 ppm and 200 ppm for pin to surface and novel filter paper design, respectively. How to reduce the detect limit and how to quantitative analysis are our final goals.